#123E58#123E58

#123E58 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.7% C 0.065 H 239.0°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#123E58
RGB	rgb(18, 62, 88)
HSL	hsl(202, 66%, 21%)
HSV	hsv(202, 80%, 35%)
CMYK	cmyk(79.5%, 29.5%, 0%, 65.5%)
CIE-LAB	lab(24.57, -4.92, -19.86)
CIE-LCH	lch(24.57, 20.46, 256.10°)
OKLab	oklab(34.74% -0.0337 -0.0561)
OKLCH	oklch(34.74% 0.065 239)
XYZ	xyz(3.7328, 4.2780, 9.8596)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123E58 #582C12

analogous

#12584F #123E58 #121B58

triadic

#123E58 #58123E #3E5812

tetradic

#123E58 #4F1258 #582C12 #1B5812

square

#123E58 #4F1258 #582C12 #1B5812

split-complementary

#123E58 #58121B #584F12

monochromatic

#051219 #081A25 #123E58 #1C628B #2786BE

Accessibility & contrast

On white

11.32

#123E58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#123E58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E58

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123E58	#FFFFFF	#000000	##FFFFFF
##123E58	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323E59

Deuteranopia (green-blind)

#283758

Tritanopia (blue-blind)

#004547

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123e58;
/* rgb */ color: rgb(18, 62, 88);
/* oklch */ color: oklch(34.7% 0.065 239.0);

Tailwind

colors: {
  custom: {
    50: '#5b7387',
    500: '#123e58',
    950: '#000000',
  },
}

SCSS

$custom: #123e58;
$custom-light: #5b7387;
$custom-dark: #000000;

JSON

{
  "hex": "#123e58",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 88
  },
  "hsl": {
    "h": 202.286,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.34736,
    "c": 0.06545,
    "h": 239
  },
  "luminance": 0.04278
}

Semantic roles & 50–950 ramp

primary

#123E58

secondary

#915735

accent

#7E3FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04080B

muted

#797B7C

Preview Lab

Preview with #123E58

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →